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1. Process
The process is the part of the process that is performed continuously on one or several workpieces on a machine tool (including a milling machine or a radial drill or planer) or a work site. The process is divided according to whether the work place changes and whether the work is continuous. For example, to mill the step workpiece, after milling the stage I and then milling the step II, this is a process; if the stage I of the batch is first milled , then the step II of the workpiece is milled, This is done through two processes, not continuously.
2. Station
When a workpiece is installed in one installation, each position occupied by the workpiece on the machine is called a station. When the step-End milling I, without removing the workpiece clamp 18 0 ° rotation, so Ⅱ into the processing position, this step including two stations.
3. Installation
The part of the workpiece that was completed in one installation was installed. In one operation, it may be done once or several times. Although there are two stations, it is only considered an installation.
4. Steps
The process can be further divided into work steps, and one process includes one or several work steps. The step is a part of the process, which is continuously completed when the surface to be machined, the cutting tool used, and the amount of cutting (including the spindle speed and feed of the machine tool, excluding the depth of the knife) remain unchanged. That part of the process. For example, drilling six Φ 18mm holes on one workpiece and drilling them one by one is counted as one step.
5. Take the knife
The machining allowance of the workpiece is large, and it cannot be cut at one time. It is necessary to cut the same surface several times with the same tool, and once for each cutting.
The basic definitions of the above components are not necessarily listed at the same time in the process cards of small and medium-sized factories, and there is not necessarily a strict limit in the division.
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